public class Test {
    public static void main(String[] args) {

        Student s = new Student();
        Teacher t = new Teacher();

        /*Student s1 = new Student("jackie", 12, "java", "football");*/

        s.displayInfo();

        /*s.setName("111");
        s.displayInfo();
        //s.setName("111");
        System.out.println(s.getName());
        t.displayInfo();*/

    }
}
